Question

Помогите решить уравнение
200 • ( x + 71 ) = 54000
900 • ( 16 - c ) = 5400
400 • ( x - 12 ) = 3600

Answer 1

200 • (х + 71) = 54000
х + 71 = 270
х = 270 – 71
х = 199

900 • (16 – с) = 5400
16 – с = 6
– с = 6 – 16
– с = – 10
с = 10

400 • (х – 12) = 3600
х – 12 = 9
х = 9 + 12
х = 21